The HazMat HeadcaseLevel 1-100 HatThis impermeable, gas-tight hood keeps your head at a comfortable 350-degree temperature throughout the day. The tinted visor lets you sweat off that unsightly face fat in the privacy of your own sweltering hell.

Update history

Trivia

The HazMat Headcase was originally designed around a piece of concept art for Team Fortress 2. Valve felt the design too closely mimicked their own art, so they initially rejected the item. The creators then recreated the hat in a new style, different from the concept art.